Dook-eastenek



UNITE STATES FATENT OFICE.

H. BURI, OF NIMVARK, NEW' JERSEY.

DOOR-FASTENER.

Specification of Letters Patent No. 25,090, dated August 16, 1859.

To all whom it may concern:

Be it known that I, HENRY BURT, of the city of Newark, county of Essex, and State of New Jersey, have invented a. new and useful Bolt for Fastening` Doors; and I hereby declare the following to be a true description thereof, reference being had to the drawings herewith.

The nature of my invention consists in an improved construction of metallic fastening for the inside of doors and like openings. These fastenings are to be placed on the door casing or jamb instead of upon the door itself.

I cast the bolt case of proper size with a plate at right angles therewith on the outer end and extending sulficiently on each side to give proper strength, and below for the admission of spurs or plates to take into the casing or recess for the closing edge of the door. lVhen the door is fastened the bolt will project over Aits edge and be locked by the button or thumb piece by which theI bolt is made to slide over and back and it is likewise locked by the saine means when the bolt is withdrawn from the door. One screw through the front or end plate and into the door casing is usually all that is necessary to secure the fastening in its place.

In drawing, Figure I represents a side view and Fig. II a top view of the fastening with the bolt closed, and Fig. III shows a side View with the bolt extended; dotted lines in Figs. I and II show the bolt inside the case.

a, a, a show the bolt cases; b, b, b, the end plates; c, c, the bolt; d, ci, cl, the button and thumb piece resting in a recess as seen in Fig. III and dotted lines in Figs. I and II, and which is secured to the bolt at one end by a pin f', f', as seen by dotted lines.

e, e, c, c are the spurs which resist the forcing off of the fastening.

It will be seen that this fastening possesses great facility for being attached for use on all bolts now in common use, besides it is of greater strength, for when properly adjusted the door cannot be opened from the outside, nor can it be forced Without tearing away the door casing itself, instead of forcing out a few screws as with bolts of common use. The bolt besides possessing great strength is always locked by the means used to slide it back and forth. It is cheaply made of size to fit any door of whatever dimensions; and can be easily removed without defacing the door and casing by screw holes as is commonly the case.

I claim- A permanent door bolt made with the fastening plate b, bolt case a, and bolt c, secured and operated as herein described.

HENRY BURT.

IVitnesses:

J. B. HYDE, D. IV. BATEMEIN. 

